Baltimore Canyon Open Space Preserve
Baltimore Canyon Open Space Preserve
Best attractions and places to see in Baltimore Canyon Open Space Preserve include diverse woodlands and natural landmarks. This 193-acre preserve, nestled in the foothills of Mount Tamalpais, features redwood groves, Larkspur Creek, and Dawn Falls. The area also holds historical significance with remnants of an old quarry. It offers varied terrain for exploration and scenic viewpoints.
Last updated: April 23, 2026
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Hiking in Baltimore Canyon Open Space Preserve
Road Cycling Routes in Baltimore Canyon Open Space Preserve
MTB Trails in Baltimore Canyon Open Space Preserve
Running Trails in Baltimore Canyon Open Space Preserve
Cycling in Baltimore Canyon Open Space Preserve
Gravel biking in Baltimore Canyon Open Space Preserve
Ladybug Trail climbs from Dawn Falls Trail to about midway up King Mountain and then follows the contours to the east
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The Hoo-Koo-E-Koo Fire Road skirts the east side of Mount Tamalpais; its winding route features stunning scenic views of San Francisco Bay and the Marin peninsula. Some say the trail was named for a band of Coast Miwok Indians that lived nearby or because of Miwok middens discovered in the area.
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Blithedale Ridge Fire Road runs Northwest-to-Southeast from Eldridge Grade (via a short Indian Fire Rd connection) on the east side of Mt Tamalpais to northern Mill Valley, following a mostly forested ridge with steep ups and downs. It connects with Corte Madera Ridge Fire Road to continue further east and drop down trough the Camino Alto OSP to the terminus of the Mill Valley-Sausalito Bike Trail. This is a segment of a longer dirtroad tour https://www.komoot.com/tour/13627077 between Point Reyes and San Francisco.
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An easier šµ loop in Mt Tamalpais Watershed: It climbs gradually on Shaver Grade fire road from the Natalie Coffin Green Park parking lot in Ross below Phoenix Lake to the intersection with Filter Road to Lake Lagunitas, circles the lake and climbs a little south of Pilot Knob, turns right south on Eldridge Grade and then offers a turn left onto Indian Fire Road which soon swings north and back down along a pronounced ridge (see photo) toward Phoenix Lake. Unfortunately Indian Fire Road connects to residential streets and very short connector trails that are pedestrian-only before continuing again as multi-use trails back to the parking lot. This track here shows the politically correct return via quiet Ross residential streets to the parking lot. See šµ Tour https://www.komoot.de/tour/9831707 for highlighted segments and labeled photos. For a similar length yet slightly more challenging loop with 4 lakes via Rocky Ridge fire road try https://www.komoot.de/tour/9817832 On every tour š Gopher snakes crossed the trails in front of my bike. They move slow so be careful not to roll over them accidentally, particularly when biking down the sweet descents. š NOT Dangerous (Non-poisonous) š Gopher Snakes do NOT have venom dangerous to humans One of the most commonly seen snakes in California. Primarily active during the day, and after sundown on hot days. Often crawling across trails and roads, and around human dwellings or backyards, attracted to rodents which thrive in such areas. Unfortunately, this harmless and beneficial species is often killed out of fear that it is dangerous or a rattlesnake. http://www.californiaherps.com/identification/snakesid/gophersnakes.id.html
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Great hiking and mountain biking on this gravel fire road in Mt Tamalpais watershed. It initially climbs south from the intersection with Eldridge Grade Fire Road, then turns north and descends along a pronounced ridgeline forming the eastern boundary of the Mt Tam watershed and the Ross residential area. At the end there are hikers-only pedestrian trails connecting back to the parking lot; on bikes the return to the parking lot is via residential streets. For a sweet 2 hour mountain bike loop via Lake Lagunitas involving this trail segment check out https://www.komoot.de/tour/9831707 For a more challenging loop with 4 lakes via Bon Tempe dam and Rocky Ridge fire road try https://www.komoot.de/highlight/153264 See šµ Tour https://www.komoot.de/tour/9831707 and https://www.komoot.de/tour/9817832 for highlighted segments and labeled photos To go up to the summit take Eldridge Grade https://www.komoot.de/highlight/215025 , or take Hoo-Koo-E-Koo https://www.komoot.de/highlight/215026 to Old Railroad Grade https://www.komoot.de/highlight/215016 for a more gradual ascent to the summit.
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The preserve is rich in natural beauty. You can discover magnificent redwood groves, which are relatives of ancient giants, and follow the important Larkspur Creek, where you might spot steelhead and California giant salamanders. A prominent natural landmark is the 30-foot Dawn Falls, particularly impressive during the rainy season. In spring, the preserve also bursts with wildflowers, especially near the Hoo-Koo-E-Koo Trail.
For stunning scenic views, head to the Hoo-Koo-E-Koo Fire Road Trail. This trail skirts the east side of Mount Tamalpais and offers expansive vistas of San Francisco Bay and the Marin Peninsula. Additionally, the Blithedale Ridge Fire Rd also provides great viewpoints as it follows a mostly forested ridge.
Yes, the preserve holds traces of its past. You can find remnants of an old quarry where blue basalt was once extracted for dam construction, hinting at the area's geological and historical significance. The preserve's towering redwoods also stand as a reminder of the region's logging history from the 1800s.
The preserve offers several popular trails. The Hoo-Koo-E-Koo Fire Road Trail is well-known for its scenic views. The Southern Marin Line Road Trail is a wide forest road popular for hiking, dog walking, and mountain biking, meandering through redwood groves. The Indian Fire Road Trail is another gravel fire road ideal for hiking and mountain biking, offering connections to other trails.
Yes, Baltimore Canyon Open Space Preserve offers trails for various activity levels. While some trails involve dramatic elevation changes, you can find easy loops. For more options, explore the Easy hikes in Baltimore Canyon Open Space Preserve guide, which includes routes like the King Mountain Loop Trail and Tucker Trail.
Absolutely. Mountain biking is a popular activity in the preserve. Trails like the Southern Marin Line Road Trail and Indian Fire Road Trail are suitable for mountain biking. For more detailed routes, check out the Cycling in Baltimore Canyon Open Space Preserve guide.
The preserve is beautiful year-round. It's particularly picturesque in winter when Larkspur Creek is full and trees are covered in moss. During the summer months, it provides cool shade, making it a pleasant escape from the heat. Spring brings a burst of wildflowers, especially near the Hoo-Koo-E-Koo Trail.
Yes, the preserve offers trails suitable for families. The diverse woodlands and natural features like Dawn Falls and Larkspur Creek provide an engaging environment for children to explore. Easy loops and wide forest roads like the Southern Marin Line Road Trail are good options for family outings.
Yes, dogs are generally welcome on many trails within Baltimore Canyon Open Space Preserve. The Southern Marin Line Road Trail, for instance, is popular for dog walking. Always ensure your dog is on a leash and follow any posted regulations.
The diverse habitats of Baltimore Canyon Open Space Preserve support various wildlife. You might spot pileated woodpeckers, which are common in the main canyon. Along Larkspur Creek, keep an eye out for steelhead and California giant salamanders.
Visitors frequently praise the preserve's diverse woodlands, the stunning scenic views from trails like the Hoo-Koo-E-Koo Fire Road Trail, and the peaceful atmosphere. The opportunity to explore redwood groves, discover Dawn Falls, and connect with nature is highly valued by the komoot community.
Yes, Baltimore Canyon Open Space Preserve offers connections to adjacent parklands. You can link up with areas like King Mountain, Blithedale Summit, and Mount Tamalpais for more extensive hikes and rides, allowing for longer and more challenging excursions.
Parking is typically available near trailheads that provide access to the preserve. For example, the Southern Marin Line Road Trail can be accessed from the Crown Road/Hoo-Koo-E-Koo Trailhead in Baltimore Canyon Open Space Preserve.


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